Short answer: C
Remark
Since b is all by itself in equation 2, Substitute it into equation 1.
2a + 3b = 5
b = a - 5 Put this result in equation 1. Be sure and use brackets.
2a + 3(a - 5) = 5 Remove the brackets.
2a + 3a - 15 = 5 Notice the -5 inside the brackets becomes - 15
Combine like terms on the left.
5a - 15 = 5 Add 15 to both sides
5a = 5 + 15
5a = 20 Divide by 5
a = 20/5
a = 4
So far, c is the only possible answer.
b = a - 5
b = 4 - 5
b = - 1
49/2= 24.5
Z=24.5
Since you need to get rid of the 2 just divide 49 by 2 and that's what Z equals
Answer:
I think 20 is the answer of the question
The advantage is that you can visibly see the difference in the data. Disadvantage of line plots would be that not as appealing.
Answer:
50
Step-by-step explanation:
